"As we pass the one month anniversary of the general availability of Windows 8, we are pleased to announce that to-date Microsoft has sold 40 million Windows 8 licenses. Tami Reller shared this news with industry and financial analysts, investors and media today at the Credit Suisse 2012 Annual Technology Conference. Windows 8 is outpacing Windows 7 in terms of upgrades." Not bad, but there are the usual asterisks, as Ars notes.